Officials on Monday said an investigation is ongoing after an Oregon man, wanted in connection with the Friday shooting of an Oregon teenager, apparently crashed his truck and shot himself near Trinidad on Saturday.

According to the Oregon State Police, Beaverton resident Kayla Ann Hendrickson, 16, was found dead late Friday night along Highway 6 east of Tillamook in northern Oregon. Jacob Allen Green, 24, of Newport, Ore., reportedly shot himself near Trinidad and died Saturday in a local hospital.

A Tillamook County Major Crime Team investigation "confirmed the woman's death was from homicidal violence," and an autopsy completed Sunday morning at the Oregon State Medical Examiner's Office determined she died after being shot multiple times.

Sheriff's Office Lt. Steve Knight confirmed Monday that Green's death was considered a suicide. He said the California Highway Patrol responded to an accident near Trinidad, and found Green had shot himself. The CHP said more information about the incident would be available today.

CHP accident logs indicate an accident occurred Saturday at 7:15 a.m. north of Trinidad, near the Seawood Drive exit on U.S. Highway 101. It said the accident involved a blue pickup truck.

A witness in Oregon reported a late model, full-sized pickup truck stopped on the shoulder near where Hendrickson was found dead. A man and a woman were seen by the witness near the pickup, an OSP press release said. The witness later reported "suspicious circumstances," and an OSP trooper responded to find Hendrickson dead alongside the highway.

On Saturday, Oregon investigators were contacted by the Humboldt County Sheriff's Office regarding an investigation they were conducting that involved "a male subject in a vehicle matching the description of one which was of interest in connection with the Highway 6 death investigation."

The Tillamook Major Crime Team and Humboldt County Sheriff's Office confirmed that Green knew Hendrickson, and he is "allegedly believed to be the only suspect involved in her death," a press release from OSP said.

An investigation by five Oregon agencies and the Humboldt County Sheriff's Office is continuing.